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[Bug target/20126] [3.3/3.4/4.0 Regression] Inlined memcmp makes one argument null on entry


------- Additional Comments From rearnsha at gcc dot gnu dot org  2005-04-16 17:50 -------
(In reply to comment #41)
> Subject: Re: [PR target/20126, RFC] loop DEST_ADDR biv replacement may fail

> Sure.   Your patch in comment #28 of bugzilla PR20126 is OK for mainline
> to resolve Josh's bootstrap failure.  Sounds like you've already done
> the necessary testing, and I'll trust you on a suitable ChangeLog entry.
>

I'm not convinced.

1) It produces non-canonical RTL: (MINUS (REG) (const))
2) It doesn't validate that insn, which is necessary in case 'const' or some
modified version of it is not valid.

R.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20126


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